<template>

  <div class="app-container">

    <h2 style="text-align: center;">发布新课程</h2>

    <el-steps :active="3" process-status="wait" align-center style="margin-bottom: 40px;">
      <el-step title="填写课程基本信息"/>
      <el-step title="创建课程大纲"/>
      <el-step title="最终发布"/>
    </el-steps>

    <div class="ccInfo">
      <img :src="coursePublish.cover">
      <div class="main">
        <h2>{{ coursePublish.title }}</h2>
        <p class="gray"><span>共{{ coursePublish.lessonNum }}课时</span></p>
        <p><span>所属分类：{{ coursePublish.subjectLevelOne }} — {{ coursePublish.subjectLevelTwo }}</span></p>
        <p>课程讲师：{{ coursePublish.teacherName }}</p>
        <h3 class="red">￥{{ coursePublish.price }}</h3>
      </div>
    </div>

    <div>
      <el-button @click="previous">返回修改</el-button>
      <el-button :disabled="saveBtnDisabled" type="primary" @click="publish">发布课程</el-button>
    </div>
  </div>
</template>

<script>
import course from '@/api/edu/course'

export default {
  data() {
    return {
      saveBtnDisabled: false, // 保存按钮是否禁用
      courseId: '',
      coursePublish: {}
    }
  },
  created() {
    //获取路由中id值
    if(this.$route.params && this.$route.params.id) {
        this.courseId = this.$route.params.id
        //调用接口方法根据课程id查询
        this.getCoursePublishId()
    }
  },
  methods: {
    //根据课程id查询课程信息
    getCoursePublishId() {
        course.getPublishCourseInfo(this.courseId)
          .then(response => {
              this.coursePublish = response.data.publishCourse
          })
    },
    previous() {
      console.log('previous')
      this.$router.push({ path: '/course/chapter/1' })
    },

    publish() {
      this.$confirm('确认最终发布课程, 是否继续?', '提示', {
              confirmButtonText: '确定',
              cancelButtonText: '取消',
              type: 'warning'
          }).then(() => {//点击确定，删除成功
              //调用删除方法
              course.publishCourse(this.courseId)
              .then(response => {//删除成功
                  //提示信息
                  this.$message({
                  type: 'success',
                  message: '课程发布成功!'
                  });
                  //跳转到课程列表页面
                  this.$router.push({ path: '/course/list' })
              })
          })//点击取消，发布失败
    }
  }
}
</script>
<style scoped>
.ccInfo {
    background: #f5f5f5;
    padding: 20px;
    overflow: hidden;
    border: 1px dashed #DDD;
    margin-bottom: 40px;
    position: relative;
}
.ccInfo img {
    background: #d6d6d6;
    width: 500px;
    height: 278px;
    display: block;
    float: left;
    border: none;
}
.ccInfo .main {
    margin-left: 520px;
}

.ccInfo .main h2 {
    font-size: 28px;
    margin-bottom: 30px;
    line-height: 1;
    font-weight: normal;
}
.ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
}

.ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
}
.ccInfo .main h3 {
    left: 540px;
    bottom: 20px;
    line-height: 1;
    font-size: 28px;
    color: #d32f24;
    font-weight: normal;
    position: absolute;
}
</style>
